TX Hash - Decode "Input Data" field

[elthom21]

Hey, does anyone know any function/method to decode the "Input Data" field on a TX hash event?
For example:
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

I know it's possible to do it directly on the Bscscan site, however my intention is to understand how to do it via a script or code.
Basically I would like to translate encrypted text (like the one I shared above) into the real function that was used.

Thanks in advance.

[ricmoo]

You can use use the Interface object to simplify your life.

const iface = new ethers.utils.Interface([ "function foo(uint bar)" ])
const info = iface.parseTransaction({ data: "0x2fbebd3800000000000000000000000000000000000000000000000000000000000004d2" })
/*
TransactionDescription {
  args: [
    BigNumber { _hex: '0x04d2', _isBigNumber: true },
    bar: BigNumber { _hex: '0x04d2', _isBigNumber: true }
  ],
  functionFragment: FunctionFragment { ... },
  name: 'foo',
  signature: 'foo(uint256)',
  sighash: '0x2fbebd38',
  value: BigNumber { _hex: '0x00', _isBigNumber: true }
}
*/

// Available positionally or via its name (if named)
console.log(info.args[0]);
console.log(info.bar);

Let me know if that helps. :)

[ricmoo]

(quick note: the data is encoded, not "encrypted"; in blockchain especially, it important to not confuse those two terms :))

[elthom21]

Thank you for the response!